Disable ASP.Net GridView autogenerate select Button when all column has value in row using C# and VB.Net

Hi akhter,

Check this example. Now please take its reference and correct your code.

HTML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AutoGenerateSelectButton="True" OnRowDataBound="OnRowDataBound">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" />
        <asp:TemplateField HeaderText="Name">
            <ItemTemplate>
                <asp:Label ID="lblName" runat="server" Text='<%# Bind("Name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Country" HeaderText="Country" />
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Country") });
        dt.Rows.Add(1, " ", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        bool isEmpty = false;
        for (int i = 1; i < e.Row.Cells.Count; i++)
        {
            if (e.Row.Cells[i].Controls.Count > 0)
            {
                if (string.IsNullOrEmpty((e.Row.Cells[i].Controls[1] as Label).Text.Trim()))
                {
                    isEmpty = true;
                    break;
                }
            }
            else
            {
                if (string.IsNullOrEmpty(e.Row.Cells[i].Text.Trim()) || e.Row.Cells[i].Text.Trim() == "&nbsp;")
                {
                    isEmpty = true;
                    break;
                }
            }
        }

        if (!isEmpty)
        {
            (e.Row.Cells[0].Controls[0] as LinkButton).Enabled = false;
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn(2) {New DataColumn("Id"), New DataColumn("Name"), New DataColumn("Country")})
        dt.Rows.Add(1, "", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub

Protected Sub OnRowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType = DataControlRowType.DataRow Then
        Dim isEmpty As Boolean = False
        For i As Integer = 1 To e.Row.Cells.Count - 1
            If e.Row.Cells(i).Controls.Count > 0 Then
                If String.IsNullOrEmpty(TryCast(e.Row.Cells(i).Controls(1), Label).Text.Trim()) Then
                    isEmpty = True
                    Exit For
                End If
            Else
                If String.IsNullOrEmpty(e.Row.Cells(i).Text.Trim()) OrElse e.Row.Cells(i).Text.Trim() = " " Then
                    isEmpty = True
                    Exit For
                End If
            End If
        Next
        If Not isEmpty Then
            TryCast(e.Row.Cells(0).Controls(0), LinkButton).Enabled = False
        End If
    End If
End Sub

Screenshot